Define open p and l

The term "Open P&L" refers to the profit or loss of a position at the current market price. It is a measure of the value of an open trade in a portfolio. As market prices change, the Open P&L will also change. It provides a quick overview of the value of current open positions, but it can be misleading as long as the trade is open, as it will constantly change. The only true time to see the current value of a trade is either when it is sold and realized as a profit or loss, or after the trading day is over.